Whichever of all Rome's churches was founded first, there is no disputing the fact that the huge fabric which occupies one side of the Piazza di S. Pietro is the most famous Christian edifice in the world. Bernini's best work, the grand colonnades on two sides of the square lead up in splendid curves to the great façade of S. Peter's. But, so great is the size of the building, so far set back the dome, that it is impossible to realise the immensity of either from any point of view in the piazza. The first church was founded in the year 90 at the place where so many martyrs had suffered death during the time of the tyrant Nero. The Emperor Constantine commenced afterwards the erection of a basilica on this spot, the façade of which Raphael has handed down in his fresco of the Incendio del Borgo. When Julian della Rovere became Pope Julius II., he wantonly ordered the destruction of the church as it then stood. This was done to make way for a greater with which his own name would be for ever connected; and he employed Bramante to design the new cathedral. Hands once more were laid on the buildings of ancient Rome and the construction was begun from its ruins. Except for some of the columns, the whole of the marble work of S. Peter's was, up to the commencement of last century, abstracted from the same source. Bramante's designs were never carried out. The many alterations to which they were subjected after his death led to great dissatisfaction, and in the end Michael Angelo was consulted. All he could do was to reserve as much as possible of the great architect's ground plan, and this is, except for the lengthening of the nave and the addition of the façade, as the great cathedral stands to-day.
The immense _travertine_ columns of the façade form part of a portico which is over two hundred feet in length. Above the columns runs an inscription recording that it was put up by the Borghese Pontiff, Paul V. A balustrade, broken by pedestals, surmounts the _cymatium_; on the pedestals are extra-colossal figures of the Saviour (in the centre) and the Twelve Apostles. At either end are groups of _barroque_ angels surrounding a circle over which is the Papal Mitre. In one of these circles there is a timepiece. The ceiling of the portico is a fine example of stucco work.